英语语法分析

Suitable concentration of tanshinol was sieved from above models.

用此模型筛选出浓度适合的丹参素。

Methods By means of UPLC, apply factorial experiment design to investigate overall the changing rule of the contents of salvianolic acid B, tanshinol, protocatechualdehyde and etc.

方法：使用超高效液相色谱仪（UPLC），采用析因试验设计，考察了丹参饮片在不同加水倍数、煎煮时间、煎煮次数下的煎出液中丹酚酸B、丹参素、原儿茶醛等多种成份的含量变化规律。